龙口水电站调峰运行对下游河道影响效果分析.docx

第11卷01期南水北调与水利科技Vol.11No.01

2013年2月South-to-NorthWaterTransfersandWaterScience.TechnologyFeb.2013

龙口水电站调峰运行对下游河道影响效果分析郭亚梅，王以圣

(中水北方勘测设计研究有限责任公司，天津300222)

摘要：根据龙口水电站设计代表年典型日下泄流量过程，采用一维非恒定流水动力学模型，对龙口水利枢纽至下游天桥段河道进行流量演进模拟计算。结合河网数学模型的计算结果，对龙口水电站调峰非恒定流量沿程坦化情况及电站反调节作用进行分析。分析比较结果表明，由于龙口水电站的反调节作用，龙口一天桥河段河道流量波动幅度减小，下游河道的水流条件得到改善，保证龙口下游河道不断流，维持龙口下游河道基本生态要求，并可明显改善河道两岸农业灌溉泵站取水条件。

关键词：龙口；调峰；非恒定流；坦化；下游河道

中图分类号：TV737;F426.61文献标识码：A文章编号：1672-1683(2013)001-0095-04

TheInfulunenceofPeakLoadRegulatinginLongkouHydroelectricPowerStationtotheDownstreamRiverCourseGUOYa-mei,WANGYi-sheng

(ChinaWaterResourcesBeifangInvestigation,DesignandResearchCO.LTD.,Tianjin300222,China)

Abstract:UsingonedimensionalconstantflowmodelandTiangiaoreservoirswaterastheboundaryconditionofdownstream,itanalyzedthedis-chargeprocessofLongkouhydroelectricpowerstation.Throughanalyingtheresultsofthemodel,simulationisperformedtoanalyzethesmoothingprocessoftheunsteadyflowdischargedfromLongkouWaterControlProjectwhenitsworkingatpeakloadandtheregulationeffectoftheproject.Aonedimensionalunsteadyflowdynamicmodelisadoptedforthesimulation,usingthetypicaldischargegraphintherepresenta-tivedesignyearoftheproject.ThesimulationshowsthatLongkouWaterControlProjectplaysasignificantroleinimprovingflowregimeinthedownstreamrivercourse.ItallaysflowfluctuationintheLongkou-Tianqiaoreach,preventsthedownstreamcoursefromdryingup,helpsmain-tainthedownstreamecology,andimprovesirrigationalongtheriver

Keywords;Longkou;peakloadregulating;unsteadyflow;smoothingofflow;downstreamrivercourse

梯级水电站调峰运行及反调节是利用各水库间的补偿作用，提高水资源利用效率、发电企业经济效益及水库下游河道运用条件改善的重要手段[1,8.11]。龙口水利枢纽是对万家寨水利枢纽调峰流量进行反调节、发电，兼有滞洪削峰等综合利用的水库。龙口水利枢纽建成前，万家寨水电站在晋、蒙电网中承担调峰任务，但由于万家寨水电站每昼夜16～18h不发电，致使万